Ball for shrapnel and method of making the same.



A. w. '6; WILSON. BALLFOR SHRAPNEL AND METHOD OF- MAKING THE SAME. APPLICATION FILED M AY 19. 19l5.

1,246,204. Patented Nov. 13, 1917 1%91' Fig.2.

Fig.4.

FL .6. Fig. 6.

Witnesses: lnvenlor':

Wmgm.

so nal core before mentioned, and is in intimate contact with it at all points, the combina- Illa-riches i s T T IcE.

ALFRED .w ..c+. WILSON, "or OTTAWA, oixi'ran'io, CANADA.

BALL ron snnerivnri ann vmrrnon or MAKING; THE; SAME;

Be it lmown thatl, ALFRED WiiiiliAM i Y ion otCanada andaBritish subject, residing at Ottawa, in the county oflCarletoii and Province of Ontario, Canada, have in- Vented new and useful Improvements in Balls 'for Shrapnel and Methods of Making balls are required. \Vhereas balls which are employed for this purpose must possess the Same, of which thefol'lowing is aspecification.

ducing balls which are designed for usein sufilcient rigidity to prevent their being fiattened at the time of discharge of their container or carrier, and whereas the desired rigidity is now obtained by using an alloy of metals, usually of the metals lead and antimony, theobject of my invention is to obtain the desired rigidity in a ball of essen:

tially the same characteristics in all other 25. as may be necessary and by covering this respects by providing an internal core of one metal or alloy, of as high a specific gravity I core with an external sheathing or shell of another metal or alloy possessing dillerent physical properties. This external sheathing or shell completely surrounds the intertion ofiiiternal core and external shell proi ducing a solid metallic ball of the desired rigidity and weight. For example, one type of ball made by this process of my invention *will consist of a solid core of the metal lead Land. a sufficiently rigid external sheathing or shell of steel, the latter more or less completely surrounding the internal core and being in intimate: contact with it at all points, the combination of the internalcore [of one material which possesses a high specific gravity with the external shell of 1 physical properties which render a thin hola different material which possesses other low spherical shell of this material sufiiciently rigid for the purpose intended, pro- I .ducing a solid metallic ball of the size and i i weight required. and possessing the rigidity necessary for the purposefonwhich it is i required.

T he invention isillu strated in the accom pauyingdrawings in which Figure 1 shows a disk from which the outer covering of the ballismade. Figs. 2 and 3 show the disk l i y specification qf Letters iatenlt.

after being subjectedto forming andsh ap- Patented Non-13,1917. a iliieat eafiieaney 19,1915. seriaimtzaeiei i manner indicated below and illustrated in tlieaccompanyiiig drawings. I cut a disk, ShOWIlQ atllg. l, of the proper size, from *as heet of metal or alloy selected as suitable for forming the external sheathing or covering of this type of ball. I subject this disk to a succession of forming and shaping operations, by employing'suitable dies and plungers, producing eventually a hemispherical cup with a short cylindrical portion attached, shown in section at Fig. 3; the requisite quantity of the metal or alloy which is to form the solid core of the ball is then inserted in this cup by any suitable means; Fig. 4 is a section showing the core material at a in place in the bottom of a cup 1) made of the sheathing metal; the open top of the cylindrical portion of the cup, .as shown in section at b in Fig. 4, is then drawn and partially closed by means of proper dies to produce the form shown in section in Fig. 5 b; and finally the cup is closed more or lesscompletely, producing a solid metallic ball, as shown in section in Fig. 6. In producing balls of this type by my process it is not essential that the core material be introduced into a cup made of the sheathing material at the stage of the process illustrated in F ig. 3; it may be inserted at an earlier stage in the process of forming the spherical sheathing shell from i the disk of sheathing'material, as shown at Fig. 2, or it maybe introduced atsome later stage, as when the form shown in Fig.5 b

has been reached, or it may be introduced when the sheath has been formed into a spherical shape with only a very small opening at one point; the time of introduction of the core material is not an essential feaalloy and an external sheathing of another metal or alloy have been produced for use 

